<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        *{
            padding: 0px;
            margin: 0px;
        }
      
        /* lpad */
       @media only screen and (min-width:768px) and (max-width:1024px){
        .demo{
                width: 100vw;
                height: 300px;
                background: red;
                display: flex;
                justify-content: space-between;
            }
        .demo img{
            width: 24vw;
            height: 24vh;
        }
       }
       /* iphone */
       @media only  screen and (min-width:375px) and (max-width:667px){
           .demo{
            width: 100vw;
            height: 200px;
            background: red;
            border: 1px solid red;
            display: flex;
             justify-content: space-between;
           }
           .demo img{
               width:15vw;
               height: 15vh;
           }
       }
           
        
    </style>
</head>
<body>
    <ul class="demo">
        <li>
            <img src="img/1528873491981702.png" alt="">
        </li>
        <li>
            <img src="img/1528873491981702.png" alt="">
        </li>
        <li>
            <img src="img/1528873491981702.png" alt="">
        </li>
        <li>
            <img src="img/1528873491981702.png" alt="">
        </li>
    </ul>
    
</body>
</html>